编号
淮安信息职业技术学院
毕业论文
题 目
齿轮螺栓垫片冲压模具设计 学生姓名 学 号 院 系 专 业 班 级 指导教师 顾问教师
孙坚 24012112 机电工程系 模具设计与制造
240121 王海平 王海平
二〇一四年十月
摘 要
摘 要
我的毕业设计是落料冲孔复合模的设计，冲压模具主要是将板料分离或成形而得到制件的加工方法。因为模具的生产主要是大批量的生产，而且模具可以保证冲压产品的尺寸精度和产品质量，模具的设计与制造主要考虑到模具的设计能否满足工件的工艺性设计，能否加工出合格的零件，以及后来的维修和存放是否合理等。在本次设计中，不仅要考虑要使做出的零件能满足工作要求，还要保证它的使用寿命。
其次设计中还要考虑到它的实际工作环境和必须完成的设计任务，采用倒装复合模，凸凹模的外形和内型孔、凹模型孔采用数控线切割机床加工，在设计中我要考虑到很多关于我所设计模具的知识，包括它的使用场合、外观要求等，从这里可以知道模具设计是一项很复杂的工作，所以在设计要不断的改进直到符合要求。
关键词：落料；工艺性；凸凹模；复合模；
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Abstract
Abstract
My graduation project is the blanking piercing die, stamping die mainly to isolated or forming the sheet metal processing methods are workpiece. Because molds are mainly high volume production, and stamping die products can ensure the dimensional accuracy and quality, mold design and manufacture of primary consideration to the mold design can meet the design process the workpiece, can process a qualified parts, and, later, maintenance and storage is reasonable. In this design, not only to consider making the parts to make to meet the job requirements, but also to ensure its service life.
Second, the design should also take into account the actual work environment and must complete the design task, using inverse compound die, the shape of main punch the holes, die hole model used CNC Cutting Machine, I have to take into account in the design a lot on my knowledge of mold design, including its use of occasions, appearance requirements, from here you can know that mold is a very complex task, so to continuous improvement in the design until it meets the requirements.
Keyword: blanking; Technological efficiency;main punch;compound die;
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目 录
目 录
摘 要 ............................................................................................................................. I ABSTRACT .................................................................................................................. II 第一章 绪论 .................................................................................................................. 1 第二章 冲压件工艺分析 .............................................................................................. 2 2.1 材料分析 ............................................................................................................. 2 2.2 零件结构 ............................................................................................................. 2 2.3 尺寸精度 ............................................................................................................. 2 第三章 冲裁方案的确定 .............................................................................................. 4 3.1 冲裁工艺方案的确定 ......................................................................................... 4 3.2 冲裁工艺方法的选择 ......................................................................................... 4 3.3 冲裁结构的选取 ................................................................................................. 4 第四章 模具总体结构的确定 ...................................................................................... 6 4.1 模具类型的选择 ................................................................................................. 6 4.2 送料方式的选择 ................................................................................................. 6 4.3 定位方式的选择 ................................................................................................. 6 4.4 卸料、出件方式的选择 ..................................................................................... 6 4.5 导向方式的选择 ................................................................................................. 6 第五章 工艺参数计算 .................................................................................................. 8 5.1 排样方式的选择 ................................................................................................. 8
5.1.1 搭边值的确定 ............................................................................................... 8 5.1.2 材料利用率的计算 ..................................................................................... 10 5.2 冲压力的计算 ................................................................................................... 11 5.2.1 总冲裁力的计算 ......................................................................................... 12 5.2.2 卸料力、推件力的计算 ............................................................................. 12 5.2.3 总冲压力的计算 ......................................................................................... 13 5.2.4 初选压力机 ................................................................................................. 13 第六章 刃口尺寸计算 ................................................................................................ 15 6.1 冲裁间隙的确定 ............................................................................................... 15 6.2 刃口尺寸的计算及依据与法则 ....................................................................... 16 第七章 主要零部件设计 ............................................................................................ 19 7.1 凹模设计 ........................................................................................................... 19
7.1.1 凹模外形的确定 ......................................................................................... 19 7.1.2 凹模刃口结构形式的选择 ......................................................................... 21 7.1.3 凹模精度与材料的确定 ............................................................................. 21 7.2 凸模的设计 ....................................................................................................... 21 7.2.1 凸模结构的确定 ......................................................................................... 21
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